import pymysql

class DB:
    def __init__(self):
        self.conn=pymysql.connect(host='localhost',port=3306,user='root',password='123',
        db='product',charset='utf8',cursorclass=pymysql.cursors.DictCursor)
        # 获取游标
        self.cousor=self.conn.cursor()

    # 添加
    def insert(self,sql):
        self.cousor.execute(sql)
        self.conn.commit()

    # 查询单个
    def find(self,sql):
        self.cousor.execute(sql)
        res = self.cousor.fetchone()
        return res
    # 查询所有
    def findall(self,sql):
        self.cousor.execute(sql)
        res = self.cousor.fetchall()
        return res
    # 关闭
    def close(self):
        self.cousor.close()
        self.conn.close()



db1=DB()
